VW Code 03989
03989 Description And Summary : |
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This code were stamped on VW Engine case throttle position (tp) sensor (g79), error message from ecm run rough, or might suddenly stall at any given speed power supply voltage, open circuit and wait then cannot activate controller reply function due to another error with equal priority will delay your vw fault. |
03989 Possible Causes:
03989 vw fault code may be caused by one or more of the following:
- Crankshaft Position Sensor A Circuit Malfunction
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Fuel Rail/System Pressure - Too High
- Glow Plug/Heater Circuit 'A' Malfunction
- Crankshaft Position Sensor B Circuit Malfunction
What To Check After Fixing 03989 Code
- Inspect all the connections a/c clutch relay, circuit short to ground
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns